:root {
  --bg: #111316;
  --bg-soft: #171a1e;
  --card: #1c2025;
  --card-strong: #232932;
  --text: #f4f7f8;
  --muted: rgba(244, 247, 248, 0.74);
  --faint: rgba(244, 247, 248, 0.58);
  --line: rgba(244, 247, 248, 0.11);
  --accent: #7eb8da;
  --accent-strong: #a8d4ef;
  --shadow: 0 22px 70px rgba(0, 0, 0, 0.28);
  --radius-lg: 32px;
  --radius-md: 22px;
  --max-width: 1180px;
  --page-gutter: 20px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

[id] {
  scroll-margin-top: 96px;
}

body {
  margin: 0;
  color: var(--text);
  background:
    radial-gradient(circle at 8% 6%, rgba(126, 184, 218, 0.2), transparent 28rem),
    radial-gradient(circle at 95% 18%, rgba(126, 184, 218, 0.12), transparent 32rem),
    linear-gradient(145deg, #101215 0%, #15191d 44%, #0d0f12 100%);
  font-family: Inter, "Helvetica Neue", Helvetica, Arial, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  min-height: 100vh;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.8' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)' opacity='0.18'/%3E%3C/svg%3E");
  opacity: 0.08;
  z-index: -1;
}

a {
  color: inherit;
  text-decoration: none;
}

a:focus-visible,
.button:focus-visible {
  outline: 2px solid var(--accent-strong);
  outline-offset: 4px;
}

.skip-link {
  position: fixed;
  top: 14px;
  left: 14px;
  z-index: 100;
  padding: 10px 14px;
  border-radius: 999px;
  color: #071015;
  font-weight: 800;
  background: var(--accent-strong);
  transform: translateY(-160%);
  transition: transform 180ms ease;
}

[data-reveal] {
  opacity: 0;
  transform: translate3d(0, 28px, 0);
  transition: opacity 620ms cubic-bezier(0.22, 1, 0.36, 1),
    transform 620ms cubic-bezier(0.22, 1, 0.36, 1);
  will-change: opacity, transform;
}

[data-reveal].is-visible {
  opacity: 1;
  transform: translate3d(0, 0, 0);
}

[data-reveal-group] [data-reveal] {
  transition-delay: calc(var(--reveal-index, 0) * 80ms);
}

.skip-link:focus {
  transform: translateY(0);
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  width: min(var(--max-width), calc(100% - (var(--page-gutter) * 2)));
  margin: 0 auto;
  padding: 18px 0;
  backdrop-filter: blur(18px);
  transition: background 180ms ease, border-color 180ms ease;
}

.site-header.is-scrolled {
  background: rgba(17, 19, 22, 0.72);
  border-bottom: 1px solid var(--line);
}

.brand,
.nav-links {
  display: flex;
  align-items: center;
}

.brand {
  gap: 12px;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.brand-mark {
  display: grid;
  width: 38px;
  height: 38px;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: 50%;
  color: var(--accent-strong);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  background: rgba(255, 255, 255, 0.04);
}

.nav-links {
  gap: 8px;
  color: var(--muted);
  font-size: 0.92rem;
}

.nav-links a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 0 10px;
  border-radius: 999px;
  transition: color 180ms ease;
}

.nav-links a:hover,
.nav-links a:focus-visible,
.site-footer a:hover,
.site-footer a:focus-visible {
  color: var(--accent-strong);
}

.section-shell {
  width: min(var(--max-width), calc(100% - (var(--page-gutter) * 2)));
  margin: 0 auto;
}

.hero {
  padding: 82px 0 48px;
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.14fr) minmax(340px, 0.86fr);
  gap: 28px;
  align-items: stretch;
}

.hero-copy,
.hero-card,
.feature-card,
.timeline-content,
.expertise-grid article,
.info-panel,
.language-band,
.contact {
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}

.hero-copy {
  padding: clamp(28px, 4vw, 48px);
  border-radius: var(--radius-lg);
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.08), transparent 42%),
    rgba(28, 32, 37, 0.72);
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--accent);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  max-width: 850px;
  margin-bottom: 24px;
  font-size: clamp(2.4rem, 4.2vw, 3.8rem);
  line-height: 1.05;
  letter-spacing: -0.04em;
}

h2 {
  margin-bottom: 18px;
  font-size: clamp(1.7rem, 3.2vw, 3rem);
  line-height: 1.1;
  letter-spacing: -0.04em;
}

h3 {
  margin-bottom: 10px;
  font-size: 1.08rem;
  line-height: 1.28;
}

.hero-text {
  max-width: 690px;
  color: var(--muted);
  font-size: clamp(1.04rem, 1.5vw, 1.28rem);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 34px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 20px;
  border-radius: 999px;
  font-weight: 700;
  transition: transform 180ms ease, border-color 180ms ease, background 180ms ease;
}

.button:hover,
.button:focus-visible {
  transform: translateY(-2px);
}

.button.primary {
  color: #071015;
  background: linear-gradient(135deg, var(--accent-strong), var(--accent));
}

.button.secondary {
  color: var(--text);
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.04);
}

.hero-card {
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  gap: 18px;
  overflow: hidden;
  min-height: 480px;
  padding: 32px;
  border-radius: var(--radius-lg);
  background:
    linear-gradient(140deg, #3b4249 0%, #333a3f 38%, #252b31 70%, #171b20 100%);
}

.hero-card::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 0%, rgba(17, 19, 22, 0.72) 100%);
}

.hero-card > * {
  position: relative;
  z-index: 2;
}

.hero-card h2 {
  max-width: 440px;
  margin: auto 0 0;
  font-size: clamp(1.8rem, 3vw, 2.6rem);
}

.hero-card p:not(.card-label) {
  max-width: 420px;
  color: var(--muted);
}

.card-label {
  color: rgba(255, 255, 255, 0.64);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.constellation {
  position: absolute;
  inset: 24px;
  z-index: 1;
  opacity: 0.9;
}

.constellation::before,
.constellation::after {
  content: "";
  position: absolute;
  background: rgba(126, 184, 218, 0.22);
  transform-origin: left center;
}

.constellation::before {
  top: 92px;
  left: 64px;
  width: 62%;
  height: 1px;
  transform: rotate(18deg);
}

.constellation::after {
  top: 186px;
  left: 110px;
  width: 50%;
  height: 1px;
  transform: rotate(-21deg);
}

.constellation span {
  position: absolute;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 24px rgba(126, 184, 218, 0.72);
}

.constellation span:nth-child(1) {
  top: 74px;
  left: 52px;
}

.constellation span:nth-child(2) {
  top: 124px;
  right: 86px;
}

.constellation span:nth-child(3) {
  top: 214px;
  left: 104px;
}

.constellation span:nth-child(4) {
  top: 176px;
  right: 34px;
}

.boarding-build {
  --build-progress: 0;
  --shell-p: 0;
  --header-p: 0;
  --passenger-p: 0;
  --route-p: 0;
  --details-p: 0;
  --stub-p: 0;
  --barcode-p: 0;
  --stamp-p: 0;
  position: relative;
  padding: 56px 0 80px;
}

.boarding-build__intro {
  margin-bottom: 28px;
}

.boarding-build__intro h2 {
  max-width: 720px;
}

.boarding-build__lede {
  max-width: 640px;
  color: var(--muted);
  font-size: clamp(1rem, 1.4vw, 1.18rem);
}

.boarding-build__layout {
  display: grid;
  grid-template-columns: minmax(360px, 1.05fr) minmax(320px, 0.95fr);
  gap: 32px;
  align-items: start;
}

.boarding-build__stage {
  position: sticky;
  top: 96px;
  display: grid;
  align-content: center;
  justify-items: center;
  min-height: calc(100vh - 120px);
  padding: clamp(24px, 4vw, 56px);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background:
    radial-gradient(circle at calc(20% + var(--build-progress) * 60%) calc(82% - var(--build-progress) * 64%), rgba(126, 184, 218, 0.22), transparent 26rem),
    linear-gradient(135deg, rgba(255, 255, 255, 0.06), transparent 48%),
    rgba(20, 24, 28, 0.85);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.boarding-build__stage::before,
.boarding-build__stage::after {
  content: "";
  position: absolute;
  pointer-events: none;
  background-image:
    radial-gradient(circle, rgba(126, 184, 218, 0.18) 0 1.5px, transparent 2px),
    radial-gradient(circle, rgba(126, 184, 218, 0.12) 0 1px, transparent 2px);
  background-size: 28px 28px, 64px 64px;
  background-position: 0 0, 14px 14px;
  opacity: calc(0.55 - var(--build-progress) * 0.4);
  transition: opacity 240ms ease-out;
}

.boarding-build__stage::before {
  inset: 0;
  mask-image: radial-gradient(circle at center, transparent 36%, black 80%);
}

.boarding-build__stage::after {
  inset: -10%;
  filter: blur(8px);
  opacity: calc(0.35 - var(--build-progress) * 0.3);
}

.boarding-pass {
  --pass-w: clamp(280px, 38vw, 560px);
  position: relative;
  width: var(--pass-w);
  aspect-ratio: 1.62 / 1;
  z-index: 1;
}

.pass-part {
  position: absolute;
  display: grid;
  align-content: center;
  color: #0c1116;
  font-family: Inter, "Helvetica Neue", Helvetica, Arial, sans-serif;
  letter-spacing: -0.01em;
  opacity: var(--p, 0);
  transform: translate3d(var(--from-x, 0), var(--from-y, 0), 0)
    rotate(calc(var(--from-rot, 0deg) * (1 - var(--p, 0))))
    scale(calc(0.86 + var(--p, 0) * 0.14));
  transition: opacity 480ms cubic-bezier(0.22, 1, 0.36, 1),
    transform 620ms cubic-bezier(0.22, 1, 0.36, 1);
  will-change: transform, opacity;
}

.pass-part--shell {
  --p: var(--shell-p);
  --from-y: calc(40px - var(--shell-p) * 40px);
  inset: 0;
  border-radius: 22px;
  background:
    linear-gradient(135deg, #f4f7f8 0%, #e7edf2 60%, #d6dfe7 100%);
  box-shadow:
    0 30px 80px rgba(0, 0, 0, 0.55),
    inset 0 0 0 1px rgba(255, 255, 255, 0.6),
    inset 0 -2px 0 rgba(12, 17, 22, 0.06);
}

.pass-part--shell::after {
  content: "";
  position: absolute;
  top: 12%;
  bottom: 12%;
  right: 27%;
  width: 1px;
  border-left: 2px dashed rgba(12, 17, 22, 0.18);
}

.pass-part--header {
  --p: var(--header-p);
  --from-x: calc(-60px + var(--header-p) * 60px);
  top: 8%;
  left: 6%;
  right: 30%;
  height: 18%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 4px;
}

.pass-airline {
  font-size: clamp(0.85rem, 1.4vw, 1.3rem);
  font-weight: 800;
  letter-spacing: 0.16em;
  color: #0c1116;
}

.pass-tag {
  flex-shrink: 0;
  padding: 4px 10px;
  border-radius: 999px;
  background: #0c1116;
  color: #f4f7f8;
  font-size: clamp(0.5rem, 0.8vw, 0.7rem);
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  white-space: nowrap;
}

.pass-part--passenger {
  --p: var(--passenger-p);
  --from-y: calc(50px - var(--passenger-p) * 50px);
  top: 28%;
  left: 6%;
  right: 30%;
  height: 22%;
  gap: 4px;
}

.pass-label {
  color: rgba(12, 17, 22, 0.55);
  font-size: clamp(0.55rem, 0.9vw, 0.72rem);
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.pass-part--passenger strong {
  font-size: clamp(1.05rem, 1.9vw, 1.8rem);
  line-height: 1.05;
  letter-spacing: -0.02em;
  color: #0c1116;
}

.pass-sub {
  color: rgba(12, 17, 22, 0.62);
  font-size: clamp(0.62rem, 1vw, 0.85rem);
  font-weight: 600;
}

.pass-part--route {
  --p: var(--route-p);
  --from-x: calc(80px - var(--route-p) * 80px);
  top: 53%;
  left: 6%;
  right: 30%;
  height: 18%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 4px;
}

.pass-leg {
  display: grid;
  gap: 2px;
  text-align: center;
  opacity: calc(0.15 + var(--leg-p, 0) * 0.85);
  transform: translateY(calc(8px - var(--leg-p, 0) * 8px));
  transition: opacity 320ms ease-out, transform 320ms cubic-bezier(0.22, 1, 0.36, 1);
}

.pass-leg[data-pass-leg="0"] { --leg-p: var(--leg0-p, 0); }
.pass-leg[data-pass-leg="1"] { --leg-p: var(--leg1-p, 0); }
.pass-leg[data-pass-leg="2"] { --leg-p: var(--leg2-p, 0); }
.pass-leg[data-pass-leg="3"] { --leg-p: var(--leg3-p, 0); }

.pass-iata {
  font-size: clamp(0.95rem, 1.8vw, 1.55rem);
  font-weight: 800;
  letter-spacing: 0.04em;
  color: #0c1116;
}

.pass-city {
  color: rgba(12, 17, 22, 0.55);
  font-size: clamp(0.55rem, 0.85vw, 0.7rem);
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.pass-arrow {
  color: rgba(12, 17, 22, 0.5);
  font-size: clamp(0.95rem, 1.6vw, 1.3rem);
  font-weight: 700;
  opacity: var(--arrow-p, 0);
  transform: translateX(calc(-12px + var(--arrow-p, 0) * 12px));
  transition: opacity 280ms ease-out, transform 280ms ease-out;
}

.pass-arrow[data-pass-arrow="0"] { --arrow-p: var(--arrow0-p, 0); }
.pass-arrow[data-pass-arrow="1"] { --arrow-p: var(--arrow1-p, 0); }
.pass-arrow[data-pass-arrow="2"] { --arrow-p: var(--arrow2-p, 0); }

.pass-part--details {
  --p: var(--details-p);
  --from-x: calc(60px - var(--details-p) * 60px);
  top: 76%;
  left: 6%;
  right: 30%;
  height: 18%;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: clamp(6px, 1vw, 14px);
}

.pass-part--details > div {
  display: grid;
  gap: 2px;
}

.pass-part--details strong {
  font-size: clamp(0.7rem, 1.05vw, 0.95rem);
  color: #0c1116;
  letter-spacing: -0.01em;
}

.pass-part--stub {
  --p: var(--stub-p);
  --from-x: calc(80px - var(--stub-p) * 80px);
  --from-rot: -4deg;
  top: 8%;
  bottom: 8%;
  right: 4%;
  width: 23%;
  display: grid;
  grid-template-rows: auto 1fr auto;
  align-items: center;
  justify-items: center;
  gap: 6px;
  padding: 8px 6px 8px 12px;
  border-left: 2px dashed rgba(12, 17, 22, 0.18);
  text-align: center;
}

.pass-part--stub .pass-label {
  align-self: start;
}

.pass-part--stub .pass-sub {
  align-self: end;
  font-size: clamp(0.55rem, 0.85vw, 0.7rem);
  line-height: 1.2;
  white-space: nowrap;
}

.pass-part--barcode {
  --p: var(--barcode-p);
  --from-y: calc(40px - var(--barcode-p) * 40px);
  position: absolute;
  top: 36%;
  bottom: 36%;
  right: 5.5%;
  width: 20%;
  display: flex;
  align-items: stretch;
  gap: 1px;
  padding: 0;
  background: transparent;
  z-index: 2;
}

.pass-part--barcode span {
  flex: 1;
  background: #0c1116;
  border-radius: 1px;
  transform: scaleY(calc(0.6 + var(--barcode-p) * 0.4));
  transform-origin: center;
  transition: transform 220ms ease-out;
}

.pass-part--barcode span:nth-child(odd) {
  flex: 1.6;
}

.pass-part--barcode span:nth-child(3n) {
  flex: 0.6;
}

.pass-part--stamp {
  --p: var(--stamp-p);
  --from-x: 28px;
  --from-y: -28px;
  --from-rot: 28deg;
  position: absolute;
  top: 30%;
  right: 33%;
  width: clamp(108px, 13vw, 150px);
  padding: 5px 0;
  border: 3px solid rgba(214, 96, 96, 0.88);
  border-radius: 10px;
  color: rgba(214, 96, 96, 0.95);
  font-size: clamp(0.72rem, 1.2vw, 1rem);
  font-weight: 800;
  letter-spacing: 0.28em;
  text-align: center;
  text-transform: uppercase;
  background: rgba(214, 96, 96, 0.05);
  z-index: 3;
  pointer-events: none;
  transform-origin: center;
  transform: translate3d(var(--from-x), var(--from-y), 0)
    rotate(calc(-12deg + (1 - var(--p, 0)) * 35deg))
    scale(calc(0.94 + var(--p, 0) * 0.06));
}

.boarding-build__progress {
  position: absolute;
  left: 50%;
  bottom: 18px;
  width: 64%;
  height: 4px;
  margin-left: -32%;
  border-radius: 999px;
  background: rgba(244, 247, 248, 0.1);
  overflow: hidden;
  z-index: 2;
}

.boarding-build__progress-fill {
  height: 100%;
  width: 100%;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--accent), var(--accent-strong));
  transform: scaleX(var(--build-progress));
  transform-origin: left;
  transition: transform 220ms cubic-bezier(0.22, 1, 0.36, 1);
}

.boarding-build__chapters {
  display: grid;
  gap: 24px;
  margin: 0;
  padding: 14vh 0 30vh;
  list-style: none;
}

.boarding-chapter {
  display: grid;
  gap: 8px;
  align-content: center;
  min-height: 60vh;
  padding: clamp(22px, 3vw, 36px);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.05), transparent 48%),
    rgba(28, 32, 37, 0.72);
  opacity: 0.4;
  filter: blur(1px);
  transform: translateY(18px) scale(0.985);
  transition: opacity 320ms cubic-bezier(0.22, 1, 0.36, 1),
    transform 380ms cubic-bezier(0.22, 1, 0.36, 1),
    filter 280ms ease,
    border-color 220ms ease,
    background 220ms ease;
  box-shadow: var(--shadow);
}

.boarding-chapter.is-active {
  opacity: 1;
  border-color: rgba(126, 184, 218, 0.5);
  background:
    radial-gradient(circle at 18% 0%, rgba(126, 184, 218, 0.16), transparent 20rem),
    rgba(28, 32, 37, 0.92);
  filter: blur(0);
  transform: translateY(-2px) scale(1);
  box-shadow: 0 30px 80px rgba(0, 0, 0, 0.45), 0 0 0 1px rgba(126, 184, 218, 0.2);
}

.boarding-chapter__index {
  color: var(--accent);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.boarding-chapter h3 {
  max-width: 520px;
  font-size: clamp(1.5rem, 2.6vw, 2.2rem);
  line-height: 1.1;
  letter-spacing: -0.02em;
}

.boarding-chapter p {
  max-width: 560px;
  color: var(--muted);
  font-size: clamp(0.98rem, 1.2vw, 1.1rem);
}

.stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
  margin: 24px 0 0;
  padding: 0;
}

.stat-card {
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.045);
}

.stat-card dt {
  display: block;
  color: var(--accent-strong);
  font-size: clamp(2rem, 4vw, 3.2rem);
  line-height: 1;
  letter-spacing: -0.06em;
  font-weight: 800;
}

.stat-card dd {
  margin: 0;
  color: var(--muted);
  font-size: 0.92rem;
}

.intro-grid,
.split-section {
  display: grid;
  grid-template-columns: 0.78fr 1.22fr;
  gap: 34px;
  padding: 98px 0 36px;
}

.feature-grid,
.expertise-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
}

.feature-card,
.expertise-grid article {
  padding: 26px;
  border-radius: var(--radius-md);
  background: rgba(28, 32, 37, 0.72);
}

.feature-card span {
  display: inline-block;
  margin-bottom: 32px;
  color: var(--faint);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.18em;
}

.feature-card p,
.timeline-content p,
.info-panel p,
.contact p {
  color: var(--muted);
}

.section-heading {
  max-width: 860px;
  padding: 104px 0 36px;
}

.timeline {
  position: relative;
  display: grid;
  gap: 16px;
  padding-left: 20px;
  margin-top: 6px;
}

.timeline::before {
  content: "";
  position: absolute;
  top: 8px;
  bottom: 8px;
  left: 0;
  width: 1px;
  background: linear-gradient(180deg, var(--accent), rgba(126, 184, 218, 0.04));
}

.timeline-item {
  position: relative;
  display: grid;
  grid-template-columns: 170px 1fr;
  gap: 24px;
}

.timeline-item::before {
  content: "";
  position: absolute;
  top: 22px;
  left: -25px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 18px rgba(126, 184, 218, 0.65);
}

.timeline-date {
  padding-top: 18px;
  color: var(--faint);
  font-size: 0.82rem;
  font-weight: 800;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.timeline-content {
  padding: 28px;
  border-radius: var(--radius-md);
  background: rgba(28, 32, 37, 0.72);
}

.timeline-content h3 span {
  display: block;
  margin-top: 5px;
  color: var(--accent);
  font-size: 0.88rem;
  font-weight: 600;
  letter-spacing: 0.02em;
}

.timeline-content ul {
  display: grid;
  gap: 10px;
  margin: 16px 0 0;
  padding-left: 18px;
  color: var(--muted);
}

.timeline-content li::marker {
  color: var(--accent);
}

.expertise {
  padding-bottom: 30px;
}

.expertise-grid article {
  background: linear-gradient(180deg, rgba(35, 41, 50, 0.88), rgba(28, 32, 37, 0.74));
}

.expertise-grid h3,
.info-panel h3 {
  color: var(--accent-strong);
}

.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 16px 0 0;
  padding: 0;
  list-style: none;
}

.tag-list li {
  padding: 7px 10px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--muted);
  font-size: 0.9rem;
  background: rgba(255, 255, 255, 0.035);
}

.info-panel {
  display: grid;
  gap: 22px;
  padding: 30px;
  border-radius: var(--radius-md);
  background: rgba(28, 32, 37, 0.72);
}

.date {
  margin-bottom: 6px;
  color: var(--faint);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.language-band {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-top: 52px;
  padding: 18px;
  border-radius: var(--radius-md);
  list-style: none;
  background: rgba(255, 255, 255, 0.04);
}

.language-band li {
  padding: 18px;
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.04);
}

.language-band span {
  display: block;
  color: var(--faint);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.language-band strong {
  display: block;
  margin-top: 4px;
  font-size: 1.04rem;
}

.contact {
  margin-top: 92px;
  margin-bottom: 70px;
  padding: clamp(34px, 6vw, 68px);
  border-radius: var(--radius-lg);
  text-align: center;
  background:
    radial-gradient(circle at 50% 0%, rgba(126, 184, 218, 0.2), transparent 30rem),
    rgba(28, 32, 37, 0.74);
}

.contact h2 {
  max-width: 900px;
  margin-right: auto;
  margin-left: auto;
}

.contact p {
  max-width: 620px;
  margin: 0 auto 28px;
}

.site-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  width: min(var(--max-width), calc(100% - (var(--page-gutter) * 2)));
  margin: 0 auto;
  padding: 22px 0 34px;
  border-top: 1px solid var(--line);
  color: var(--faint);
  font-size: 0.9rem;
}

.site-footer p {
  margin: 0;
}

.site-footer a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 0 10px;
  border-radius: 999px;
  color: var(--muted);
}

.not-found {
  display: grid;
  align-content: center;
  min-height: 100vh;
  padding: 60px 0;
}

.not-found h1 {
  max-width: 760px;
}

.not-found .button {
  justify-self: start;
  margin-top: 18px;
}

@media (max-width: 980px) {
  .site-header {
    align-items: flex-start;
    flex-direction: column;
  }

  .boarding-build__layout {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .boarding-build__stage {
    top: 86px;
    min-height: 0;
    aspect-ratio: 1.7 / 1;
    padding: clamp(18px, 4vw, 40px);
    z-index: 5;
  }

  .boarding-build__chapters {
    padding: 0;
    gap: 14px;
  }

  .boarding-chapter {
    min-height: auto;
    opacity: 0.7;
    filter: blur(0);
    transform: translateY(6px) scale(0.99);
  }

  .boarding-chapter.is-active {
    transform: translateY(0) scale(1);
  }

  .hero-grid,
  .intro-grid,
  .split-section {
    grid-template-columns: 1fr;
  }

  .hero-card {
    min-height: 380px;
  }

  .stats,
  .feature-grid,
  .expertise-grid,
  .language-band {
    grid-template-columns: repeat(2, 1fr);
  }

  .timeline-item {
    grid-template-columns: 1fr;
    gap: 8px;
  }

  .timeline-date {
    padding-top: 8px;
  }

  .pass-part--stamp {
    top: 36%;
    right: 30%;
  }
}

@media (max-width: 680px) {
  .site-header {
    width: min(var(--max-width), calc(100% - 28px));
    padding-top: 12px;
    padding-bottom: 12px;
    background: rgba(17, 19, 22, 0.82);
  }

  .nav-links {
    flex-wrap: wrap;
    gap: 8px;
  }

  .nav-links a {
    min-height: 40px;
    padding: 0 8px;
  }

  .boarding-build {
    padding-top: 32px;
  }

  .boarding-build__stage {
    top: 124px;
    border-radius: 22px;
    aspect-ratio: auto;
    min-height: 360px;
    padding: clamp(20px, 4vw, 28px);
  }

  .boarding-pass {
    --pass-w: min(440px, calc(100vw - 60px));
    aspect-ratio: 1.32 / 1;
  }

  .pass-part--header,
  .pass-part--passenger,
  .pass-part--route,
  .pass-part--details {
    right: 30%;
  }

  .pass-part--header {
    height: 16%;
  }

  .pass-part--passenger {
    top: 26%;
    height: 22%;
  }

  .pass-part--passenger strong {
    font-size: clamp(0.95rem, 4.2vw, 1.25rem);
  }

  .pass-part--route {
    top: 50%;
    height: 18%;
  }

  .pass-iata {
    font-size: clamp(0.78rem, 3.4vw, 1.05rem);
  }

  .pass-city {
    font-size: clamp(0.48rem, 1.9vw, 0.6rem);
  }

  .pass-arrow {
    font-size: clamp(0.78rem, 3vw, 1rem);
  }

  .pass-part--details {
    top: 72%;
    height: 22%;
    grid-template-columns: repeat(2, 1fr);
    gap: 2px 10px;
  }

  .pass-part--details strong {
    font-size: clamp(0.6rem, 2.3vw, 0.78rem);
  }

  .pass-part--shell::after {
    right: 27%;
  }

  .pass-part--stub {
    width: 23%;
    right: 4%;
    padding: 0 4px 0 8px;
  }

  .pass-part--stub strong {
    font-size: clamp(0.6rem, 2.3vw, 0.78rem);
    letter-spacing: 0.02em;
  }

  .pass-part--stub .pass-sub {
    font-size: clamp(0.45rem, 1.5vw, 0.6rem);
    line-height: 1.1;
    letter-spacing: 0.04em;
    white-space: normal;
  }

  .pass-part--stub .pass-label {
    font-size: clamp(0.45rem, 1.5vw, 0.6rem);
  }

  .pass-part--barcode {
    width: 18%;
    top: 36%;
    bottom: 36%;
    right: 5%;
  }

  .pass-part--stamp {
    --from-x: 22px;
    --from-y: -22px;
    width: clamp(96px, 24vw, 130px);
    padding: 4px 0;
    font-size: clamp(0.56rem, 2vw, 0.74rem);
    letter-spacing: 0.22em;
    top: 32%;
    right: 30%;
    left: auto;
  }

  .boarding-chapter {
    padding: 22px;
    border-radius: 22px;
    min-height: 36vh;
  }

  .boarding-chapter h3 {
    font-size: clamp(1.4rem, 7vw, 1.9rem);
  }

  .section-shell,
  .site-footer {
    width: min(100% - 28px, var(--max-width));
  }

  .hero {
    padding-top: 34px;
  }

  h1 {
    font-size: clamp(1.9rem, 8.5vw, 2.6rem);
    line-height: 1.1;
    letter-spacing: -0.03em;
  }

  h2 {
    line-height: 1.14;
  }

  .hero-copy,
  .hero-card,
  .contact {
    border-radius: 24px;
  }

  .stats,
  .feature-grid,
  .expertise-grid,
  .language-band {
    grid-template-columns: 1fr;
  }

  .hero-card {
    min-height: 320px;
    padding: 26px;
  }

  .hero-card h2 {
    font-size: clamp(2rem, 11vw, 3rem);
  }

  .intro-grid,
  .section-heading,
  .split-section {
    padding-top: 72px;
  }

  .timeline {
    padding-left: 14px;
  }

  .timeline-item::before {
    left: -19px;
  }

  .site-footer {
    align-items: flex-start;
    flex-direction: column;
  }

  .contact {
    margin-top: 64px;
    margin-bottom: 52px;
  }

  .contact-email {
    width: 100%;
    max-width: 100%;
    padding-right: 14px;
    padding-left: 14px;
    overflow-wrap: anywhere;
    text-align: center;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }

  .button:hover,
  .button:focus-visible {
    transform: none;
  }

  .boarding-build {
    --build-progress: 1 !important;
    --shell-p: 1 !important;
    --header-p: 1 !important;
    --passenger-p: 1 !important;
    --route-p: 1 !important;
    --details-p: 1 !important;
    --stub-p: 1 !important;
    --barcode-p: 1 !important;
    --stamp-p: 1 !important;
  }

  .boarding-build__stage {
    position: static;
  }

  .pass-part {
    transform: none !important;
    opacity: 1 !important;
  }

  .pass-leg,
  .pass-arrow {
    opacity: 1 !important;
    transform: none !important;
  }

  .pass-part--stamp {
    transform: rotate(-6deg) !important;
  }

  [data-reveal] {
    opacity: 1 !important;
    transform: none !important;
  }

  .boarding-chapter {
    filter: none !important;
    opacity: 1 !important;
    transform: none !important;
  }
}